Question

A child present with cyanosis. Diagnosis is

• A. Cottage loaf heart, Truncus arteriosus
• B. Snowman heart, supracardiac TAPVC
• C. Egg on side, TGA
• D. Boot shaped heart, TOF

Answer 1

The Correct Option is B

A child presents with cyanosis and the likely diagnosis needs to be deduced from the given options. The options represent different congenital heart defects with distinctive radiographic findings. We need to identify the characteristic shape seen in chest X-rays for each condition:

• Cottage loaf heart, Truncus arteriosus: This condition is associated with the appearance of a cottage loaf, which typically involves a single arterial trunk coming off the heart and does not resemble our case scenario.
• Snowman heart, supracardiac TAPVC: Supracardiac Total Anomalous Pulmonary Venous Connection (TAPVC) is characterized by the 'Snowman' or 'Figure of 8' appearance on an X-ray, resulting from the anomalous return of pulmonary veins forming a structure above the heart that looks like a snowman's head and body.
• Egg on side, Transposition of the Great Arteries (TGA): TGA is associated with the 'egg-on-a-string' appearance on chest X-rays, which is characteristic but different from what is described in the question.
• Boot shaped heart, Tetralogy of Fallot (TOF): This condition creates a 'boot-shaped' appearance due to right ventricular hypertrophy and an upturned apex.

The correct answer, based on the distinctive 'Snowman' appearance of the heart and the associated condition of supracardiac TAPVC, is Snowman heart, supracardiac TAPVC, given the presentation of cyanosis in the child.